Welcome to the board Bonez. Here's one of the very informative caresheets featured at bp.net:
http://ball-pythons.net/modules.php?...warticle&id=52

Humidity is generally kept between 50-60%. It is recommended that you get a good digital thermometer (a favorite around here is Acurite..from Wal-mart). It reads cool side, warm side, and humidity. You can spray your cage with water to increase humidity.